Home / 153,931.70-212,474.14-90,295.22

Finding the Fourth Proportional to 153,931.70, 212,474.14 and 90,295.22

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Solution

The fourth proportional to 153,931.70, 212,474.14 and 90,295.22 is: 124,635.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,931.70 : 212,474.14 = 90,295.22 : x
  2. Step 2: Convert to fraction form
    153,931.70/212,474.14 = 90,295.22/x
  3. Step 3: Cross multiply
    153,931.70x = 212,474.14 × 90,295.22
  4. Step 4: Simplify right side
    153,931.70x = 19,185,399,215.61
  5. Step 5: Solve for x
    x = 19,185,399,215.61/153,931.70
  6. Step 6: Final answer
    x = 124,635.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.